Q: 16 (SCRA/2014)

The property of ‘surface tension’ arises due to
1. excess potential energy of the molecules at the surface in comparison to their potential energy at the interior.
2. less potential energy of the molecules at the surface in comparison to their potential energy at the interior.
3. hydrogen bonds present in liquid molecules.
4. Brownian motion of the liquid molecules.
Select the correct answer using the code given below :
stats: 
0,144,104,144,24,56,24

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